A Randomised, Double Blind, Placebo Controlled, Multicentre, Cross Over Proof of Concept Study to Investigate the Efficacy and Safety of Pre Emptive Administration of Repeated, Oral Doses of VA111913 TS for the Alleviation of Dysmenorrhoea

VA111913 TS twice daily for a maximum of 6 days during one menstrual cycle followed by placebo twice daily for up to a maximum of 6 days during a second menstrual cycle in a cross over design

Placebo Comparator: Starch pill

Drug: VA111913 TS and placebo

VA111913 TS twice daily for a maximum of 6 days during one menstrual cycle followed by placebo twice daily for up to a maximum of 6 days during a second menstrual cycle in a cross over design

Detailed Description:

Dysmenorrhoea is suffered by between 50% and 90% of women of child bearing age. Up to 30% of these women are non-responsive to the currently prescribed therapies. As such it represents an area of unmet medical need. VA111913 inhibits vasopressin-induced contractions of human myometrial strips and human myometrial blood vessels in vitro. By this mechanism, it is anticipated that the pain of dysmenorrhoea, a condition in which myometrial tone and contractions are increased and blood flow to the uterus is decreased compared to normal, may be reduced.

Subjects will be dosed with VA111913 TS and placebo in a cross over design during two consecutive menstrual cycles. They will be dosed for up to a maximum of 6 days, beginning 2 days before the onset of menstruation. Subjects will then assess the menstrual pain, bleeding and amount of analgesia required to treat symptoms during each cycle

Eligibility

Ages Eligible for Study:

18 Years to 35 Years

Genders Eligible for Study:

Female

Accepts Healthy Volunteers:

No

Criteria

Inclusion Criteria:

Women between 18 and 35 years old

Not pregnant

History of primary dysmenorrhoea

Regular menstrual cycles

Signed informed consent

Exclusion Criteria:

Known secondary dysmenorrhoea

Concomitant use of regular prescription or non prescription medications or herbal remedies

Any clinically significant medical history or active disease

Participation in another clinical study in the last 3 months

Contraindication to chosen rescue medications or allergy to their constituents

Other protocol defined eligibility criteria may apply

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Please refer to this study by its ClinicalTrials.gov identifier: NCT00963053